Title (en)

METHOD TO TRANSMIT DOWNHOLE VIDEO UP STANDARD WIRELINE CABLE USING DIGITAL DATA COMPRESSION TECHNIQUES

Title (de)

VERFAHREN ZUR ÜBERTRAGUNG VON BOHRLOCHAUFZEICHNUNGENÜBER STANDARDKABEL MITTELSDATENKOMPRESSION

Title (fr)

PROCEDE DE TRANSMISSION DE DONNEES VIDEO DE FOND DE PUITS LE LONG D'UN CABLE ELECTRIQUE STANDARD EN UTILISANT DES TECHNIQUES DE COMPRESSION DE DONNEES NUMERIQUES

Publication

EP 1051838 A4 20060208 (EN)

Application

EP 99903268 A 19990122

Priority

• US 9901310 W 19990122
• US 1337398 A 19980126

Abstract (en)

[origin: WO9938315A2] Disclosed is a downhole video system that is suitable for use with a standard wireline transmission line, without the need for coaxial or fiber optic cable. A downhole video camera transmits a digitized video signal that may be multiplexed with orientation, sound, and other telemetry data. At the surface, an enhanced video is displayed simultaneously with processed sound to give an operator a better understanding of the conditions downhole. In addition, multiple modes are provided, including a "burst" mode to provide high resolution, full motion video, thereby circumventing the severe bandwidth limitations of standard electrical transmission lines.

IPC 8 full level

H04N 1/00 (2006.01); E21B 47/12 (2012.01); H04N 7/18 (2006.01); H04N 7/26 (2006.01)

CPC (source: EP US)

E21B 47/12 (2013.01 - EP US); H04N 7/183 (2013.01 - EP US)

Citation (search report)

• [A] US 5134471 A 19920728 - GENDRON ALAIN [CA], et al
• See references of WO 9938315A2

Designated contracting state (EPC)

DE FR GB NL

DOCDB simple family (publication)

WO 9938315 A2 19990729; WO 9938315 A3 19991007; DE 69943056 D1 20110203; EP 1051838 A2 20001115; EP 1051838 A4 20060208; EP 1051838 B1 20101222; NO 20003812 D0 20000725; NO 20003812 L 20000725; NO 332277 B1 20120813; US 6229453 B1 20010508

DOCDB simple family (application)

US 9901310 W 19990122; DE 69943056 T 19990122; EP 99903268 A 19990122; NO 20003812 A 20000725; US 1337398 A 19980126